John i



lltitetl gieten @aient @wird JOHN ll. MORTIMORE, OF NEW YORK, N. Y.

Letters .Patent No. 98,790, dated January/11, 1870; antedated January 3 1870.

PNEUMATIC 'VALVE FOR ORGANS, 8tc.

The Schedule referred to in these Letters Patent and making part of the lame To all whom. it 'may concern Be it known that I, JOHN R; Molrrnronn, of New York city, in the county and State of New York, have invented a new and useful Improvement in Organs; and Ldo hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part ot' this specification, in which- 'Fignrc l is a detail sectional view of a portion of an organ, illustrating my improven'lent, taken through the line 1/ y, fig. 2.

Figure 2 is a detail sectional view of the same, taken through the line :c x, fig. 1.

Similar letters ot' reference indicate corresponding parts.

My invention has for'its object to improve the construction of the action-mechanism ot' organs, so that the pallet may be operated, to make the pipes speak, by the pressure of the wind in the wind-chest, thns greatly lesseuing the labor of playing the organ; and

It consists in placing the pneumatic pallet in the wind-chest of thegsounding-board.

A represents one of the keys, which is constructed and pvoted in the ordinary manner.

B is the sticker, the lower end of which rests inl a socket-in the key A,'and the upper end ot' which passes up through the bottom ofthe wind-chest'C; and is loaded or weighted suicientl y to bring it down when the pressure of the key is removed.

D is a valve, formed upon the sticker B, placedin a recess in the bottom ot' the wind-chest C, and provided with an upper and lower valve-seat, as shown in figs. 1 and 2.

' E is a small pneumatic pallet or bellows, the interior of which is connected with the vztlvechamber of the valve D by a groove, F, as shown in tig. 1, so that whenx the said valve D is raised, there may be an open connection between the interior of the pneumatic pallet E and the open air, and when the valve' D is lowered, there may be a ti'ee connection between the intexior ot' the pneumatic pallet E and the interior of the wind-chest C.

The upper or movable part of the pneumatic pallet is connected with the pallet G, by a connecting-rod, H,

so that the pallet G may beopened, to cause the pipe I to speak, hy lowering the upper or movable part ot' the pneumatic pallet E.

- lVhen l'the movable part of the pneumatic pallet E rises, the pallet G is raised by the spring J.

The pipes. I should be connected with the windchest C by a sounding-board, in the ordinary manner,

which sounding-board is not shown in the drawing, as

there is nothing new in its construction.

li is the wind-trunk, through which the'wind is ntrodncedjnto the wind-chest By this construction, when the sticker or puppet B is raised, the pressure of the wind, in the wind-chest C, opens the pallet G, and allows thc pipe to speak, so that all the power necessary to be applied to the keys A, is simply enough to raise' 'the pneumatic valve D, the rest ot the action being carried on by thel pressure of the wind. v

This construction also enables the poppct-valves to be placed direct-ly above the keys, wherever the pneumatic pallets maybe placed, the grooves or air-passages F, by which the valves D are connected with said pneumatic pallets, running radially, or in inclined directions, from said sticker-valves to said pneumatic pallets, however great the distance may be.

When this ilnproveinentis attached to organs already bnilt, the wind-chests, in which the pneumatic pallets E are placed, are arranged beneath the ordinary wind-chest, and are connected with it by pipes, so that the pressure 0f the wind may be uniform in both, or, rather, so that they both may form one wind-chest.

1 claim as new, and desire to secure by Letters Patent- 1; Placing the pneumatic pallet E in the wind-chest 'C of the sounding-board, substantiallyas herein shown 

